Crabs mate in the early summer and in the fall. It is important for crabs to mate when the female crab has recently molted and her outer shell is soft. If the female's shell is no longer soft, the crabs are unable to mate successfully. Before the female molts, she releases chemicals that attract male crabs to come and mate with her while there is still enough time.Know More
Female crabs enter maturity by molting after attracting male crabs. These attracted male crabs often fight with one another in order to win over a female crab. As part of a mating ritual, the male crab stands on the tips of his legs and sways around from side to side. If he is accepted by a female who is about to molt, the male carries the female for several days until she is ready to molt.
After the outer shell has been shed, the two crabs mate. This process can take several hours and the females keep the males' sperm in a sac until they are ready to fertilize their eggs later on. The fertilization usually occurs during migration season. Sometimes, male crabs continue to carry and cradle female crabs after they have mated to ensure the female does not mate again while her new shell is still soft.Learn more about Crabs
The lifespan of a crab varies according to species. A blue crab lives one to eight years, while a hermit crab lives 30 to 70 years. The Dungeness crab lives up to 10 years, and the horseshoe crab lives up to 20 years or more.Full Answer >
Although hermit crabs must keep their gills moist in order to be able to breathe, they cannot breathe underwater. In fact, they will die if they are submerged in water because their gills will not provide the oxygen they need to survive. This is why it is recommended that owners keep a piece of sponge in their water dish, so they have something to hold onto and will not drown.Full Answer >
Hermit crabs kept as pets can easily live for over 10 years if cared for properly. One crab owner, Carol Ormes of Ft. Myers, Florida, kept a pair of crabs that lived to be over 30 years old.Full Answer >
Crabs live in the water, which includes the oceans, rivers, lakes and ponds; most crab species are fond of freshwater. Crabs come in different sizes, ranging from a few millimeters to up to 12 feet. Even though they live in water, crabs sometimes venture to land, and certain species, such as the robber crabs, can even climb trees.Full Answer >